Identify the axis of symmetry and vertex of f (x) = - x^ 2 - 2x-1. Axis of symmetry: x = - 1; Vertex: (1, 0) Axis of symmetry: x = 1; Vertex: (1, 0) Axis of symmetry: x = - 1; Vertex: ( - 1, 0) Axis of symmetry: x = 1; Vertex: ( - 1, - 1)
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